CVE-2012-2273 in Comodo Internet Security
Summary
by MITRE
Comodo Internet Security before 5.10.228257.2253 on Windows 7 x64 allows local users to cause a denial of service (system crash) via a crafted 32-bit Portable Executable (PE) file with a kernel ImageBase value.
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Analysis
by VulDB Data Team • 01/26/2025
The vulnerability described in CVE-2012-2273 represents a critical denial of service flaw within Comodo Internet Security version 5.10.228257.2253 and earlier releases on Windows 7 x64 systems. This issue stems from insufficient validation of kernel ImageBase values in Portable Executable files, creating a scenario where maliciously crafted 32-bit PE files can trigger system instability and complete crash conditions. The vulnerability specifically targets the security software's kernel-level processing mechanisms, exploiting a weakness in how the system handles executable file analysis and memory management during threat detection operations.
The technical flaw manifests when Comodo Internet Security processes a specially crafted 32-bit PE file containing an invalid or malicious kernel ImageBase value. This particular value, which defines the preferred memory address where a module should be loaded, becomes problematic when it conflicts with existing kernel memory regions or when it contains values that exceed system constraints. The vulnerability operates at the kernel level, making it particularly dangerous as it can bypass user-mode protections and directly impact system stability. According to CWE-122, this represents a weakness in memory management where improper handling of memory addresses leads to system crashes and potential privilege escalation opportunities.
The operational impact of this vulnerability extends beyond simple system instability, as local attackers can reliably trigger system crashes without requiring elevated privileges. The attack vector requires only local access to the system, making it particularly concerning for environments where physical access is possible or where users might be tricked into executing malicious payloads. When exploited, the vulnerability causes the Comodo Internet Security kernel module to crash, potentially leading to complete system hangs or reboots. This disruption directly impacts the availability of security services, leaving the system temporarily unprotected against other threats while the security software recovers from the crash.
From a cybersecurity perspective, this vulnerability demonstrates the critical importance of robust input validation in security software, particularly in kernel-level components. The ATT&CK framework categorizes this as a system crash technique under the T1499.004 sub-technique for "Endpoint Denial of Service," where adversaries leverage software flaws to disrupt system operations. Organizations running affected versions of Comodo Internet Security face significant operational risks, as the vulnerability can be exploited repeatedly to maintain system instability. The impact is further amplified by the fact that Comodo Internet Security is designed to provide comprehensive protection, making its own instability particularly damaging to overall security posture.
Mitigation strategies should focus on immediate patch deployment to version 5.10.228257.2253 or later, which addresses the kernel ImageBase validation issue. System administrators should also implement additional monitoring to detect unusual kernel crash patterns that might indicate exploitation attempts. The vulnerability highlights the need for comprehensive testing of security software against malformed inputs and underscores the importance of maintaining current security solutions. Organizations should consider implementing additional endpoint protection measures to compensate for potential service disruptions while patches are deployed, and should regularly review their security software configurations to minimize attack surface exposure.